Whitcomb l



(Nro Model.)

W. L. JUDSON.

GONDUITFOR DRIVING MBGHANISM 0F STREET-RAILWAYS. No. 402,889.. PatentedMay '7, 1889.

@2501751400500 l jmvelnfoz UNITED STATES PATENT OFFICE.-

IVHITOOMB L. JUDSON, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR TO THE JUDSONPNEUMATIO RAILIVAY COMPANY, OF SAME PLACE.

CONDUIT FOR DRIVING IVIECHANISIVI OF STREET-RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 402,839, dated May 7,1889. Application filed November 17, 188?. Serial No.. 291,174. (Nomodel.)

To @ZZ wtont it may concern.-

Be it known that I, WHITCOMB L. JUDsoN, a citizen of the United States7and a resident of the city of Minneapolis, county of Hennepin, State ofMinnesota, have invented a certain .new and useful Improvement inConduits for the Driving Hechanism of Surface Street- Railways, of whichthe following is a speci fication, reference being had to theaccompanying drawings.

My invention is especially designed for use in connection with theparticular system of street-railway propulsion set forth in anotherapplication executed by me of date November l0, 1888. The specialfeature of that system is the use of a continuous revolvin gdriving-drum arranged along the line of the cars travel and aset offriction-wheels on the dependent portion of the car capable of engagingwith said driving-drum at an angle to its axis. The rotary motion of thedriving-drum is in this way converted into a rectilinear motion on thecar. For supporting this driving-drum and giving ready access thereto, Ihave designed the particular yoke and conduit frame-work hereindescribed. Some features of this conduit, however, are capable ofgeneral application to all kinds of conduit roads.

My invention consists in the construction hereinafter fully described,and particularly pointed out in the claims. Its leading feature is aremovable combined slot-railand paving-block trough detachably connectedto the supporting-yokes. Another feature of importance is a continuousbrush supported from the slot-rails and stretching across the slot forexcluding snow and dust from the conduit.

In the drawings, like letters referring to like parts throughout, FigureI is a vertical cross-section. Fig. II is a vertical longitudinalsection of the supporting-yokes in the plane of the slot, showing thedriving-drum and its bearing in side elevation. Fig. III is a plan ofFig. I with the slot-rail and paving-block trough on one side and partof the road-bed on both sides removed, and Fig. IV is a plan of onesection of the slot-brush detached.

A is a sleeper adapted to form the bottom of the conduit and support theyokes.

B are Y-shaped yokes, resting at their junction upon the sleeper A, andprovided between their spreading arms with the conduitspace B. l

C are bracket-arms attached to one Aside of the yokes and projectinginto the vertical center of the conduit-space. They are preferablyformed integral with the yokecastings. Each bracket is provided with abearing, c, for the driving-drum D. The top plates of the yokes are cutaway above the conduit-space, leaving the slot-space b. The arms of theyokes are provided on their outer ends with vertical iianges d.

E are track-rails, of the ordinary construction, secured to the outeredges of the yokes.

F are angle-iron girders bolted to the yokes at corresponding pointsoutside the inner ends of the top plates. The vertical ianges of theseangle-iron girders serve as a line of support for the combined slot-railand blocktrough G. This slot-trough is formed of a pair of angle-irons,g 'and g, having their base-plates securely bolted together.

The outer angle-iron, g, is provided with a downturned iiange or hook,g, adapted to engage the upper edges of the vertical plate of theangle-iron F. The inner angle-iron, g', inclines upward and inward, andis provided with lateral flanges h and h. The bottom of the trough Grests on' the inner ends of the top plates of the yokes, and is heldfrom lateral displacement by the hook g, overhanging the vertical flangeof the girders F. This trough G is formed in sections of a length toreach from one yoke to the other. to give access to the interior of theconduit.

I-I are the paving-blocks, part of which are supported on planks K inthe customary manner, part on the base-plate of the girders F, and partin the trough G.

The inner angle-irons, g', of the trough G do not touch each other, butare separated by the proper distance to leave the necessary slot-space.

L is a slot-protecting brush, which is made up of sectional brushesplaced within the It is therefore readily :removablev IOO space betweenthe flanges h and h on the inner angle-irons, g. The filaments of theopposite sections of J[he brush interlace across the slot-space andserve to exclude snow, dust, and dirt from the conduit.

By attaching the shaft-supports (l to one side of the yokes B a clearspace is atforded on the other side of the conduit for the passage 0faswecping broom or brush to clear the conduit of snow and dust.

It will be readily understood that other means might be provided fordetachably connecting the troughs G to the yokes B. The constructionshown, however, is the one which I prefer for the purpose.

That I claim, and desire to secure by Iletters Patent of the UnitedStates, is as follows:

l. In underground power-conduits for surface street-railways, thecombination, with supporting-yokes provided with slot-spaces, of girderssecured to said yokes on the opposite sides of said slot-spaces and acombined slot-rail and paving-block su pport detachably connected tosaid gi rders, substantially as described.

2. In underground power-conduits Afor surface street-railways, thecombination, with supporting-yokes provided with slot-spaces, of girderssecured to the top plates of the yolces on the opposite sides andslightly removed 'from said slot-spaccs, provided with vertical flanges,and removable4 combined slot-rails and paving-block troughs resting uponsaid yokes on the opposite sides of said slot-space and provided withhook-shaped flanges engaging With the vertical flanges of said girders,substantially as described.

3. The combination, with the supporting conduit-yokes B, havingslot-spaces, of the L- shaped girders F, secured' to said yokes on theopposite sides of said slot-spaces, and the combined slot-rail andpaving -block supports G, provided with the hook-like flange g, engagingwith the vertical flanges of the girders F.

4. In power-conduits for street-railways, provided with a longitudinalslot, a protecting-brush mounted in the Walls of said slot and spanningthe same for the exclusion of snow, dirt, and dust, substantially asdescribed.

5. In power-conduits for street-railways, provided with longitudinalslots, the combination, with slot-rails provided With brush.- seats ontheir inner opposing faces, of brushes mounted in said seats, havingtheir filaments inter-lacing across said slot, substantially asdescribed.

\VIIITGOMB L. JUDSON.

In presence of* JAS. F. VVILLIAMsoN, EMMA F. ELMORE.

